21778845

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6947}}^1$

素因数の和:6985

約数の個数: 32

約数和(自身を含む): 40020480

約数和(自身を除く): 18241635

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 165, 209, 285, 627, 1045, 3135, 6947, 20841, 34735, 76417, 104205, 131993, 229251, 382085, 395979, 659965, 1146255, 1451923, 1979895, 4355769, 7259615, 21778845]

約数ペア:

[(1, 21778845), (3, 7259615), (5, 4355769), (11, 1979895), (15, 1451923), (19, 1146255), (33, 659965), (55, 395979), (57, 382085), (95, 229251), (165, 131993), (209, 104205), (285, 76417), (627, 34735), (1045, 20841), (3135, 6947)]